/* ***** BEGIN LICENSE BLOCK *****
 *   Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is JsWs.
 *
 * The Initial Developer of the Original Code is
 * Chris Winberry.
 * Portions created by the Initial Developer are Copyright (C) 2007
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 * 
 * ***** END LICENSE BLOCK ***** */

/**
 * @class Class to represent an HTTP cookie
 * @constructor
 * @param {String} name Name of the cookie
 * @param {String} value Cookie contents
 * @requires Querystring
 */
function Cookie (name, value) {
	/**
	 * Name of the cookie
	 * @type String
	 */
	this.name = name;
	/** @private */
	this.watch("value", function (property, oldVal, newVal) { return(new Querystring(newVal)); });
	/**
	 * Contents of the cookie
	 * @type Querystring
	 */
	this.value = value;
	/**
	 * Path for the cookie
	 * @type String
	 */
	this.path = null;
	/**
	 * Cookie's domain
	 * @type String
	 */
	this.domain = null;
	/** @private */
	this.watch("expires", function (property, oldVal, newVal) {
		var date = null;
		if (!(newVal instanceof Date))
			try { date = new Date(newVal) } catch (e) { }
		return(date);
		});
	/**
	 * Expiration time of the cookie
	 * @type Date
	 */
	this.expires = null;
	/**
	 * Flag indicating whether the cookie is for HTTPS only
	 * @type Boolean
	 */
	this.secure = false;
}


/**
 * Runs cleanup on internal objects
 */
Cookie.prototype.destroy = function () {
	this.unwatch("value");
	this.unwatch("expires");
}


/**
 * Serializer
 * @type String
 */
Cookie.prototype.toString = function () {
	return(
		"Set-Cookie: "
		+ escape(this.name) + "=" + escape(this.value)
		+ (this.path ? "; path=" + escape(this.path) : "")
		+ (this.domain ? "; domain=" + escape(this.domain) : "")
		+ (this.expires ? "; expires=" + this.expires.toGMTString() : "")
		+ (this.secure ? "; secure" : "")
		);
}


/**
 * Parses a {@link Request#headers}, extracting any cookies found
 * @param {Request.headers} header {@link Request#headers Headers} collection of a {@link Request} object
 * @returns Collection of cookies found
 * @type {@link Cookie}[]
 */
Cookie.parse = function (header) {
	var results = new Array();
	if (!header)
		return(results);
	var cookies = header.toString().split(/(?:;\s*)/);
	for (var i = 0; i < cookies.length; i++) {
		var pieces = cookies[i].split(/=/);
		var key = unescape(pieces.shift());
		results[key] = new Cookie(key, unescape(pieces.join('=')));
	}
	return(results);
}

